text: /*===---- lzcntintrin.h - LZCNT intrinsics ---------------------------------===
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   *
   *===-----------------------------------------------------------------------===
   */
  
  #if !defined __X86INTRIN_H && !defined __IMMINTRIN_H
  #error "Never use <lzcntintrin.h> directly; include <x86intrin.h> instead."
  #endif
  
  #ifndef __LZCNT__
  # error "LZCNT instruction is not enabled"
  #endif /* __LZCNT__ */
  
  #ifndef __LZCNTINTRIN_H
  #define __LZCNTINTRIN_H
  
  static __inline__ unsigned short __attribute__((__always_inline__, __nodebug__))
  __lzcnt16(unsigned short __X)
  {
    return __X ? __builtin_clzs(__X) : 16;
  }
  
  static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
  __lzcnt32(unsigned int __X)
  {
    return __X ? __builtin_clz(__X) : 32;
  }
  
  static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
  _lzcnt_u32(unsigned int __X)
  {
    return __X ? __builtin_clz(__X) : 32;
  }
  
  #ifdef __x86_64__
  static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
  __lzcnt64(unsigned long long __X)
  {
    return __X ? __builtin_clzll(__X) : 64;
  }
  
  static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
  _lzcnt_u64(unsigned long long __X)
  {
    return __X ? __builtin_clzll(__X) : 64;
  }
  #endif
  
  #endif /* __LZCNTINTRIN_H */
  